Answer – No. The Sig Rapid WB™ test is design to detect the levels of microbes typically found in water associated with fuel and is not designed to test fuel directly. To test a fuel phase sample directly please use the MicrobMonitor2 test.
The Sig Rapid WB™ test is designed to detect microbial contamination in water phase when active proliferation has begun. It is not designed to detect the normal background levels of microbes present in water associated with fuel. Therefore it will not give a strong positive result if microbes are not actively multiplying and growing on the fuel which the water is associated with.